Study type: Medical/biological study (experimental study)

Human Sleep Under the Influence of a GSM 1800 Electromagnetic Far Field med./bio.

Published in: Somnologie (Somnology) 2005; 9 (4): 185-191

Aim of study (acc. to author)

The aim of the study was to identify such effects in the context of electromagnetic fields emitted by base stations on sleep.



Exposure Parameters
Exposure 1: 1,800 MHz
Modulation type: pulsed
Exposure duration: continuous for about 8 h during 2 out of 4 nights

Exposure 1

Main characteristics
Frequency 1,800 MHz
Exposure duration continuous for about 8 h during 2 out of 4 nights
Additional info vertically polarized
Modulation type pulsed
Repetition frequency 1,736 Hz
Exposure setup
Exposure source
Distance between exposed object and exposure source 1.5 m
Chamber Dedicated chamber (2 m x 1.4 m x 2 m) with the walls and the ceiling covered by EMF absorbing foam pads (< -20 dB at 1.7 GHz) and one wall left open for exposure.
Setup The antenna was positioned in front of the bed at a distance of 1.5 m to the subject's head.
Additional info The experiment was designed as a crossover study under double-blind conditions. After an adaptation night, the field was activated randomly for 2 out of 4 consecutive nights.
Measurand Value Type Method Mass Remarks
electric field strength 30 V/m unspecified measured - -
power density 2.3 W/m² unspecified measured - -
SAR 72 mW/kg maximum estimated 10 g -

Reference articles

  • Zwamborn APM et al. (2003): Effects of Global Communication system radio-frequency fields on Well Being and Cognitive Functions of human subjects with and without subjective complaints

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Investigated organ system:
Time of investigation:
  • before exposure
  • during exposure
  • after exposure

Main outcome of study (acc. to author)

The results failed to detect any statistically significant effect of a far field GSM electromagnetic field exposure on human sleep.

Study character:

Study funded by

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